Ritchie Explorer Dash Mount Compass100% repairable. 4 1 2" Card. Provide the ultimate in high speed performance, accuracy and dependability whether you're on the race course or offshore fishing. High visibility Blue dials with extra large white numerals. Built in compensators to easily adjust for deviation. Scientifically matched sapphire jewel and hardened steel pivot dial movement. Internal gimbal systems for maximum stability during adverse pitch and roll conditions. DirectiveForce